Change file content : File Write « File « C++






  1. C++
  2. File
  3. File Write

Change file content

Change file content
#include <iostream>
#include <fstream>
#include <cstdlib>
using namespace std;

int main(int argc, char *argv[])
{
  if(argc!=4) {
    cout << "Usage: CHANGE <filename> <byte> <char>\n";
    return 1;
  }

  fstream out(argv[1], ios::in | ios::out | ios::binary);

  if(!out) {
    cout << "Cannot open file.\n";
    return 1;
  }

  out.seekp(atoi(argv[2]), ios::beg);

  out.put(*argv[3]);
  out.close();

  return 0;
}








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